161010156666158 has 16 divisors (see below), whose sum is σ = 242125548596736. Its totient is φ = 80301880514520.

The previous prime is 161010156666143. The next prime is 161010156666167. The reversal of 161010156666158 is 851666651010161.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58669466 + ... + 61352477.

It is an arithmetic number, because the mean of its divisors is an integer number (15132846787296).

Almost surely, 2^{161010156666158} is an apocalyptic number.

161010156666158 is a deficient number, since it is larger than the sum of its proper divisors (81115391930578).

161010156666158 is a wasteful number, since it uses less digits than its factorization.

161010156666158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120023639.

The product of its (nonzero) digits is 1555200, while the sum is 53.

The spelling of 161010156666158 in words is "one hundred sixty-one trillion, ten billion, one hundred fifty-six million, six hundred sixty-six thousand, one hundred fifty-eight".